Laptop back pack



FIG. 1 is a front perspective view of the back pack.

FIG. 2 is a front view of the back pack.

FIG. 3 is a rear view of the back pack.

FIG. 4 is a left view of the back pack.

FIG. 5 is a right view of the back pack.

FIG. 6 is a top view of the back pack; and,

FIG. 7 is a bottom view of the back pack. 

The ornamental design for a laptop back pack, substantially as shown and described. 